Motor for railway-cars



(ModeL) 2 Sheets-Sheet 1.

I. ROBBINS.

MOTOR FOR RAILWAY CARS.

No. 398,449; Patented Feb. 26. 1889.

, WI N SEES INVENTEIFI m fiw/fwww a N. FETERS. Phnm-Lilhogmphcr. Washington, 0. c.

and other railway cars; and it consists in the mechanism shown in the several views of the IRA ROBBINS, OF CAMDEN, NEl V JERSEY.

M OTO R F0 R RA! LWAY-CARS.-

SPECIFICATION forming part of Letters latent No. 398,449, dated February 26, 18 89.

Application filed August 20, 1883- Serial No. 283,178- (ModeL) To all whom it may concern.-

Be it known that I, IRA ROBBINS, a citizen of the United States, residing at Camden, in the county of Camden and State of New J ersey, have invented a new and useful Motor, of which the following is a specification.

My invention relates to a motor for street accompanying two sheets of drawings, in which- Figure 1 is a plan view of the machine. Fig. 2 is a face view of the vibrating arm, adjusting-head, and rack and pinion. Fig. 3 is a view of the ratchet-wheel, shut-off, and pa-Wls, the forked rod and one pawl being shown in dotted lines. Fig. 4 is a side elevation of the machine. The car-wheels and loose pulley are detached to exhibit the ratchet-wheel. Fig. 5 is an end view showing the weighted collar, shut-off, forked rod, ratchet-wheel and pawls, idle-wheel, rack and pinion, and carwheels. Fig. 6 is an end view of the shut-off, weighted wheel, and car-axle, showing their relative positions. Fig. 7 is a view of the idlewheel and car-axle; and Fig. 8 is a reduced longitudinal view of the horizontal rack, pinions, shaft, vibrating arm, and adj Listing-head.

Similar letters refer to similar parts in the several views.

The mechanism of the motor consists of an imparting-pulley, 1, on a shaft, 2, that extends transverselyin journal-boxes 3 of a bed-plate, 4, which is carried by the axles 5 6 of the car. The projecting end of shaft 2 has a pinion, 7, gearing with a spur-wheel, 8, connecting by a rod, 9, with a vibrating arm, 10, on a shaft, 11, as shown in Figs. 1 and 4.

12 is an adjusting-head that is connected with and slides against the arm 10, Figs. 1, 2, and 4. To a pin, 13, of this head is connected one end of a rod, 14, the other end of which is forked for straddling an idle or friction wheel, 15, that turns loosely on the axle 5. This mode of construction permits of a perfectlyfree reciprocating motion of the forked rod, and at the same time prevents any side and vertical play, Figs. 1, 4, 5, 6, and 7.

16 are pawls that turn freely on pins 1.7 of the forked rod 14 and engage with the serrations of a ratchetwheel, 18, on the axle 5,

Figs. 1, 3, 4, and 5. Turning loosely on the same axle, 5, is a weighted collar, 19. To its extension 20 is fixed a circular flanged. plate or shut-off, 21, the flange of which extends over the periphery of the ratchet-wheel18 and has openings 22, through which the pawls 16 engage with the serrations of said ratchet-wheel, Figs. 1, 3, 5, and

At the side of bed-plate 4, Figs. 1, 2, 4, and 5 isa post, 23, that has fixed to its bottom end a pinion, 24, meshing sidewise with a hori zontal rack, 25, sliding against the side of the bed-plate. The other end of the rack engages with a pinion, 26, on the end of a shaft, 27, placed parallel with shaft 11 of the vibrating arm 10. Shaft 27 extends through a suitable slot, 28, in arm 10, and carries on that end a pinion, 29, for engaging with a rack, 30, formed on one side of a slot, 31, in the head 12, Figs. 1, 2, 4, and 8.

The arrangement of shafts 11 and 27 is such that shaft 27 passes through slot 28 in arm 10, so as not to interfere with its vibration, and has its pinion 29 so located that the pitch-line of its teeth is on a line with the center of shaft 11, and during the vibration of arm 10 and head 12 the teeth of rack 80 can roll over those of pinion 29 without turning it, and thus not raise or lower the head. Upon the principle of giving such motion to the head as will enable it to control the stroke of the fork and the speed of the car-axle through the medium of the pawls and ratchetwheel, the head 12 is secured on its arm 10 and slides over it by means of its rack and pinion. The throw of the forked end will therefore depend upon the distance of pin 13 of the head from the center of pinion 29, and the nearer it approaches that center the shorter will be the stroke of the fork and the distance the ratchet-wheel is turned at each engagement of a pawl.

The operation of my invention is as follows: Upon power being applied to pulley 1 motion is communicated to spur-wheel 8 by its pinion 7. Connecting-rod 9 converts the rotary motion of spur-wheel 8 into a vibratory 1110- tion of arm 10. The vibratory motion of arm 10 and its head 12 gives a reciprocating motion to forked rod 14, which, by means of its pawls 16, meshing with the serrations of ratchet-wheel 18, imparts a continuous rotary motion to car-axle 5 and its wheels 33. The stoppage of the car is effected without interfering with the running of the motive power as follows: Instantly, by rotating collar 19 through its cord 34, the circular shut off 21. is turned until its closed or flanged portion 35 (full black lines, Figsil and 6) covers the travel of pawl 16, whereby they are precluded from engaging with the serrations of ratchet-wheel 18 and slide idly to and fro over the said flanged part 21. By taking the pressure from cord 3-1 weight 36 reacts and rotates collar 19 until openings 22 take beneath the pawls, Figs. 3, 5, and 6. To stop the car gradually or reduce its speed, post 23 is rotated until .its pinion 2st and rack 25, in connection with pinions 26 29 on opposite ends of parallel shaft 27, move rack 30 and bring pin 13 to the center of rotation or center of shaft 11, and, as before mentioned, the nearer pin 13 approaches the center of shaft 11 the slower will be t-heniotion until it ceases. The intersection of dotted lines 37 38 and 39 10, Fig. 2, is the point of contact of the center of shaft 11 and the pitch-line of pinion 29, from which the motions of the relative parts controlling the throw of forked rod 1+1 will be readily understood.

I do not confine myself to the construction of the several partsillustrated and described, knowing that a skilled mechanic may vary the same and still carry out the end and de sign of my invention. I also do not confine myself to any actuating power, but will use a steam or electrical engine or other suitable device, as occasion may require.

I claim as my invention 1. In a car-motor, the combination of a pulicy, 1, or other imparting mechanism, a shaft, 2, gears 7 8, a connecting-rod, ,9, and a vibrating arm, 10, for the purpose shown and described.

2. In a car-motor, the combination of a vibrating arm, 10, an adj usting-head, 12, a forked rod, 14, an idle-wheel, 15, a shaft, 5, and a means for actuating the same, for the purpose shown and described.

3. In a car-motor, the combination of a shaft, 5, a forked rod, 14, an idle-wheel, 15, one or more pawls, 16, a ratchetwheel, 18, and means for actuating the same, for the purpose shown and described.

4. In a car-motor, the combination of a shaft, 5, an idle-wheel, 15, a forked rod, 14, one or more pawls, 16, a ratchet-wheel, 18, a weighted collar, 19, a shutoff wheel, 21, and means for actuating the same, for the purpose shown and described.

5. In a car-motor, the combination of a pinion, 24, a rack, 25, a pinion, 26, a shaft, 27, a pinion, 29, a rack, 30, and means for actuating the same, for the purpose shown and described.

6. In a car-motor, an opening, 28, formed through a vibrating arm, 10, for the purpose shown and described.

7. In a car-motor, the combination of a gearwheel, 29, with a rack, 30, in a head, 12, the gear and rack so arranged that the point of contact of the pitch-lines of their teeth is in a vertical plane passing through the center of shaft 11 of an arm, 10, for the purpose shown and described.

IRA ROBBINS.

Vi tn esses:

WM. S. HOFFMAN, FRANCIS D. PASTORIUS. 

